CN205866895U

CN205866895U - Stomach exports pernicious big port tectorial membrane double -layered bracket that blocks

Info

Publication number: CN205866895U
Application number: CN201620481277.5U
Authority: CN
Inventors: 石定
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-05-25
Filing date: 2016-05-25
Publication date: 2017-01-11
Anticipated expiration: 2026-05-25

Abstract

The utility model discloses a stomach exports pernicious big port tectorial membrane double -layered bracket that blocks, including inlayer support and outer support, the inlayer support is woven by the shape memory alloy silk and is formed, including inlayer support intestines side, the middle somatic part of inlayer support and inlayer support oral -lateral end, and somatic part in the middle of the diameter of inlayer support intestines side and inlayer support oral -lateral end is greater than, outer support is woven by shape memory alloy silk, including outer support somatic part and outer support oral -lateral tip, and outer support somatic part tectorial membrane, on the somatic part, outer support oral -lateral pot head is in the part of the nearly inlayer support somatic part of inlayer support oral -lateral termination in the middle of the inlayer support for outer support somatic part cover, its advantage lies in: 1 )Inlayer support oral -lateral end expandes the back, can closely laminate with gastric outlet obstruction near -end gastral cavity, improves the evacuation rate of food to can prevent the support infraplacement, 2 )Outer support somatic part tectorial membrane, what prevent to cause because of the tumour is endogenetic blocks once more.

Description

A kind of stomach outlet malignant obstruction large port overlay film double-layer scaffold

Technical field

This utility model relates to a kind of medical apparatus and instruments, and specifically a kind of more than 3.7mm service aisle that can pass through discharges, And can be by the large port overlay film double-layer scaffold of endoscopic implantation.

Background technology

Gastric cancer accounts for the 3rd in whole world mortality of malignant tumors, and China dies from annual 160000 people of gastric cancer person every year；5 years Survival rate is only 7～34%, and Resection Rate only accounts for 23～30%, and after gastrojejunostomy, gastric emptying occurs in the patient of about 57% Postpone；Palliative operation, the symptom of only about 50% is eased；Major part Patients with Gastric Cancer when being found be the terminal stage of a disease or Whole latter stage；Most of patients can lose surgical engine meeting thus cannot take food.

At present, can treat inoperable gastric cancer by implanted metal support under scope or cancer of pancreas has been caused Malignant obstruction, has that wound is little, painful little, the few intercurrent disease of patient and a low feature of surgery cost, is particularly suited for advanced age, conjunction And the malignant obstruction patient of multiple disease；But, the metal rack being currently used for treating malignant obstruction is not all suitable for stomach outlet Position.

ZL 200720105871.5 has recorded a kind of large port support treating stomach outlet malignant obstruction, but this patent Support port bigger, it is impossible to be pre-filled with in the bracket conveyer that external diameter is 3.3mm, and released by scope service aisle Putting, its method for implantation is complicated, and it is painful that increasing can add patient, and it is relatively low to be implanted to power.

Utility model content

This utility model is not enough for prior art, it is provided that a kind of port is tight with coat of the stomach laminating greatly, stent migration rate is low Block the large port overlay film double-layer scaffold that rate is low and can be implanted by scope service aisle again.

In order to solve above-mentioned technical problem, this utility model is addressed by following technical proposals: a kind of stomach outlet is disliked Property blocks large port overlay film double-layer scaffold, including inner stent and outer stent；Described inner stent is by shape-memory alloy wire Braiding forms, including inner stent intestinal side, inner stent intermediate body portion and inner stent mouth side, described inner stent intestinal side End for expansion shape and sets more than described intermediate body portion, described inner stent mouth side thereon with the diameter of inner stent mouth side It is equipped with exhausting line one；Described outer stent is woven into by shape-memory alloy wire, including outer stent body and outer stent mouth Side end, described outer stent body overlay film, described outer stent mouth side end is provided with exhausting line two；Described outer stent Body is enclosed within described inner stent intermediate body portion, and described outer stent mouth side is enclosed within described inner stent mouth side close to interior The part of layer support body.

Being shaped to of described inner stent mouth side plays the typhon degree of lip-rounding of screens effect or rim of a cup shape.

Termination maximum gauge ＞ 28mm after the expansion of described inner stent mouth side, can play and prevent support from moving to far-end The effect of position.

Being shaped to of described inner stent intestinal side plays the hemispherical preventing support from proximally shifting.

Described inner stent mouth side is shaped as the typhon degree of lip-rounding or rim of a cup shape, the not overlay film launched.

A kind of stomach outlet malignant obstruction large port overlay film double-layer scaffold, it is also possible to include bracket conveyer, described support Carrier includes trocar sheath, syringe interface, lock knob, inner sleeve and silk guide passage；Described inner stent and outer stent are respectively It is arranged between trocar sheath and inner sleeve.

This utility model compared with prior art, has the advantages that 1) after inner stent mouth side launches, can be with Gastric outlet obstruction near-end gastral cavity fits tightly, and improves the Emptying Rate of food, and can prevent support from shifting downwards；2) outer stent body Portion's overlay film, prevents cause because intra-tumor is raw again to block；3) can pre-install in the bracket conveyer that external diameter is 3.3mm, it is simple to Operation and release, develop skill success rate.

Accompanying drawing explanation

Fig. 1 is two kinds of structural representations of the inner stent of this utility model embodiment.

Fig. 2 is two kinds of structural representations of the outer stent of this utility model embodiment.

Fig. 3 is the structural representation of the bracket conveyer of this utility model embodiment.

Fig. 4 is the scheme of installation of this utility model embodiment.

Detailed description of the invention

The utility model is described in further detail with enforcement below in conjunction with the accompanying drawings；Figure mark as follows: inner stent 1, interior Layer support intestinal side 11, inner stent intermediate body portion 12, inner stent mouth side 13, exhausting line 1, outer stent 2, outer layer Support body 21, outer stent mouth side ports 22, exhausting line 2 23, bracket conveyer 3, trocar sheath 31, syringe interface 32, lock Knob 33, inner sleeve 34, silk guide passage 35.

A kind of stomach outlet malignant obstruction large port overlay film double-layer scaffold, including inner stent 1 and outer stent 2, outer layer props up Frame is enclosed within inner stent.

As shown in Figure 1: inner stent is formed by nitinol alloy wire braiding, overall without overlay film, including inner stent intestinal side The diameter of 11, inner stent intermediate body portion 12 and inner stent mouth side 13, inner stent intestinal side and inner stent mouth side More than inner stent intermediate body portion (a diameter of about 18mm), inner stent mouth side is provided with exhausting line 1, exhausting line one For white linear thing, pull so that inner stent mouth side shrinks, it is simple to support is installed and reclaimed；Inner stent mouth side Can play screens effect prevents support from moving down, and shapes and sizes are similar to size to gastric outlet obstruction near-end gastral cavity shape, Port maximum gauge ＞ 28mm after the expansion of inner stent mouth side, preferably between 30-50 mm；Inner stent intestinal side Being shaped to play the hemispherical preventing support from proximally shifting, diameter is about 25mm；Figure gives inner stent mouth side It is shaped as toroidal and cup-shaped both structures, certainly can also have other expansion shape.

As shown in Figure 2: outer stent is formed, including outer stent body 21 and outer stent mouth by the braiding of nickel-titanium metal silk Side end 22, outer stent mouth side is provided with exhausting line 2 23；The diameter 18mm of outer stent body, surface is coated with polyurethane Overlay film；The maximum diameter of outer stent mouth side is 25mm, not overlay film；Figure gives outer stent mouth side be toroidal or Two kinds of cup-shaped structures, can also have other expansion shape certainly.

After assembling, outer stent body is enclosed within inner stent intermediate body portion, and outer stent mouth side is enclosed within inner stent Mouth side is close to the part of inner stent body.

As shown in Figure 3: a kind of stomach outlet malignant obstruction large port overlay film double-layer scaffold also includes bracket conveyer 3, props up Frame carrier includes trocar sheath 31, syringe interface 32, lock knob 33, inner sleeve 34 and silk guide passage 35, and the external diameter of trocar sheath is adopted With 3.3m, the scope of service aisle >=3.7mm can be passed through；Syringe interface, can inject contrast agent by this passage；Dextrorotation Trocar sheath can be fixed by twist lock button, rotates cage knob counterclockwise and trocar sheath can be made to loosen；Silk guide passage plays guide effect, interior Put seal wire；Inner stent and outer stent are separately mounted between trocar sheath and inner sleeve.

As shown in Figure 4: in use, first inner stent being enclosed within the inner sleeve of bracket conveyer, tractive reclaims Inner stent mouth side packed up by line one, and left hand controls the inner stent mouth side shunk, and the right hand controls trocar sheath, and two palmistrys are to fortune Dynamic, inner stent is arranged on the remote location between trocar sheath and inner sleeve；The installation of outer stent and inner stent Installation method is identical；Rotate fixing after installation again with cage knob；During application, implant seal wire by scope service aisle, make to lead The section of blocking crossed by silk, and confirms that seal wire is positioned at enteric cavity；Outer stent is installed by the insertion of scope service aisle along seal wire Bracket conveyer, arrives the section of blocking, and discharges outer stent；After confirming that outer stent position is accurately, exit bracket conveyer, then edge Seal wire inserts the bracket conveyer having installed inner stent by scope service aisle, arrives the outer stent position implanted Time, make the inner stent in bracket conveyer ride the most implanted outer stent under x-ray monitors, then release internal layer props up Frame；The inner stent coaxial sleeve making release is stacked on the most implanted outer stent, and the mouth side of inner stent is laminated on outer layer The mouth side one of support；Service aisle above by scope inserts and discharges support and is referred to as through-the-at English Scope, is medically called for short TTS, means and discharges support by scope service aisle.

What this utility model was substantially protected is to be implanted for treating stomach outlet malignant obstruction by scope service aisle Large port overlay film double-layer scaffold, be characterized in inner stent be large port without overlay film, outer stent overlay film, may be installed That on the bracket conveyer of 3.3mm, finally can be discharged by the scope of service aisle >=3.7mm, be used for solving stent migration and Because tumor grows a kind of design blocking problem again caused in stent mesh.

From the angle of business, can propping up the inner stent of large port, the outer stent of overlay film and external diameter 3.3mm Frame carrier is given birth to as complete sets of products and sells, within being protection domain of the present utility model.

Claims

1. a stomach outlet malignant obstruction large port overlay film double-layer scaffold, it is characterised in that: include that inner stent (1) props up with outer layer Frame (2)；Described inner stent is formed, including in inner stent intestinal side (11), inner stent by shape-memory alloy wire braiding Between body (12) and inner stent mouth side (13), described inner stent intestinal side is big with the diameter of described inner stent mouth side In described intermediate body portion, described inner stent mouth side is for launching shape and being provided with exhausting line one (14) thereon；Described outer layer Support is woven into by shape-memory alloy wire, including outer stent body (21) and outer stent mouth side end (22), described outside Layer support body surface coating, described outer stent mouth side end is provided with exhausting line two (23)；Described outer stent body Being enclosed within described inner stent intermediate body portion, described outer stent mouth side is enclosed within described inner stent mouth side and props up close to internal layer The part in support body portion.

2. a kind of stomach outlet malignant obstruction large port overlay film double-layer scaffold as claimed in claim 1, it is characterised in that: in described Layer support mouth side be shaped to play the typhon degree of lip-rounding of screens effect or rim of a cup shape.

3. a kind of stomach outlet malignant obstruction large port overlay film double-layer scaffold as claimed in claim 2, it is characterised in that: can play Prevent support termination maximum gauge ＞ 28mm after the expansion of the described inner stent mouth side of distal travel.

4. a kind of stomach outlet malignant obstruction large port overlay film double-layer scaffold as claimed in claim 1, it is characterised in that: in described Layer support intestinal side be shaped to play the hemispherical preventing support from proximally shifting.

5. a kind of stomach outlet malignant obstruction large port overlay film double-layer scaffold as claimed in claim 1, it is characterised in that: in described Layer support mouth side is shaped as the typhon degree of lip-rounding or rim of a cup shape, the not overlay film launched.

6. a kind of stomach outlet malignant obstruction large port overlay film double-layer scaffold as claimed in claim 1, it is characterised in that: also include Having bracket conveyer (3), described bracket conveyer includes trocar sheath (31), syringe interface (32), lock knob (33), inner sleeve And silk guide passage (35) (34)；Described inner stent is arranged between trocar sheath and inner sleeve.